LEGS

The majority of muscles in the leg are considered long muscles, in that they stretch great distances. As these muscles contract and relax, they move skeletal bones to create movement of the body. Smaller muscles help the larger muscles, stabilize joints, help rotate joints, and facilitate other fine-tuned movements.
The largest muscle masses in the leg are present in the thigh and the calf.
The quadriceps are the strongest and leanest muscles in the body. These four muscles at the front of the thigh are the major extensors of the knee.